Device to train aviators or for amusement purposes,申请号US19290342959-传众专利搜索

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发明名称	Device to train aviators or for amusement purposes
摘要
申请公布号	US1912174(A)	申请公布日期	1933.05.30
申请号	US19290342959	申请日期	1929.02.27
申请人	RALPH ROCCO	发明人	BISCH ALVIN
分类号	G09B9/12	主分类号	G09B9/12
代理机构		代理人
主权项
地址

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